When using DB2® Universal JDBC type 2 driver on z/OS®, the messaging engine fails to start. This is a known issue and can be solved by tuning the JDBC driver.
BBOO0220E: [SB6NLA1:SB6NLA1.server1-SB6NLA1] CWSIP0002E: An internal messaging error occurred in com.ibm.ws.sib.processor.impl.MessageProcessor, 1:1469:1.365, com.ibm.ws.sib.msgstore.MessageStoreRuntimeException: com.ibm.ws.sib.msgstore. PersistenceException: CWSIS1501E: The data source has produced an unexpected exception: com.ibm.db2.jcc.t2zos.y: [IBM/DB2][T2zos/2.5.48]T2zosPreparedStatement. readPrepareDescribeOutput_:processDescribeOutput:1563:Storage Allocation Error at com.ibm.ws.sib.msgstore.cache.links.AbstractItemLink.readDataFromPersistence (AbstractItemLink.java:2487) at com.ibm.ws.sib.msgstore.cache.links.AbstractItemLink._ restoreItem(AbstractItemLink.java:639)